Home / 10,020.80-15,031.20-3,451.52

Finding the Fourth Proportional to 10,020.80, 15,031.20 and 3,451.52

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Solution

The fourth proportional to 10,020.80, 15,031.20 and 3,451.52 is: 5,177.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,020.80 : 15,031.20 = 3,451.52 : x
  2. Step 2: Convert to fraction form
    10,020.80/15,031.20 = 3,451.52/x
  3. Step 3: Cross multiply
    10,020.80x = 15,031.20 × 3,451.52
  4. Step 4: Simplify right side
    10,020.80x = 51,880,487.42
  5. Step 5: Solve for x
    x = 51,880,487.42/10,020.80
  6. Step 6: Final answer
    x = 5,177.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.